#ifndef _MAIN_H
#define _MAIN_H
typedef union
{
    uint8_t  buf[70];
    struct
    {
	uint8_t head; 
	uint8_t lenth;
	uint8_t msg_type;
	uint8_t msg_id;
	uint8_t cmd_type;
	uint8_t cmd_id;
	uint8_t mcu_data[64];     
    }pkt;
}SEND_FRAME_u;

#endif